Lock.



W. H. TAYLOR.

LOCK.

APPLICATION FILED JAN. 5, 1912.

Patented July 16, 1912.

VE/VTOR I r A lorney WITNESSES "*1" I W WW COLUMBIA PLANOGIAPHc0.,wASHlNqMN. n. c.

UNITED STATES PATENT OFFICE.

WARREN H. TAYLOR, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE & TOWNEMANUFACTURING COMPANY, OF STAMFORD, CONNECTICUT.

LOCK.

Specification of Letters Patent.

Application filed January 5, 1912. Serial No. 669,523.

To all whom it may concern:

Be it known that I, WARREN H. TAYLOR, a citizen of the United States,residing at Stamford, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements in Looks;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same. I

My invention relates to an improvement in looks, designed particularlyfor use on safe deposit boxes, the object being to provide a lock havingchange and guard key mechanisms each of which must be actuated by a keybefore the lock can be unlocked, with a third key mechanism for changingthe combination of the main look from one change key to another.

With this object in view my invention consists in a bolt, guard keyactuated mech anism for dogging the bolt, change key actuated mechanism,includingv two part tumblers, for retracting the bolt, and key actuatedmechanism for separating the two parts of the several tumblers wherebytheir relative arrangements will be changed by the insertion and turningof a change key.

My invention further consists in the parts and combination of parts andin the details of construction as will be more fully eX- plained andpointed out in the claims.

In the accompanying drawings, Figure 1 is a view in front elevation ofthe lock. Fig. 2 is a view in rear elevation. Fig. 3 is a view of thelock, with the cover plate removed, showing the bolt projected, lockedand deadlocked. Fig. 1 is a similar view showing the bolt retracted.Fig. 5 is a similar view showing the tumbler sections separatedpreparatory to changing the combination. Fig. 6 is a view with'thetumblers removed showing the bolt, slide plate, dead locking or dogginglever and means for actuating the slide plate. Fig. 7 is a view of therear end of the lock showing the catch holding the dogging lever out ofthe path of the bolt and Fig; 8 isa view in perspective of the dogginglever.

1 represents a lock case adapted for attachment tothe door of a safedeposit boX, and 2 is the bolt, having an open slot 3 at its rear endand a closed slot 4 in its body, for the passage of the pin 5 carried byslide 6 located against the rear face of the bolt. Secured to the lockcase in line with the open slot 3 in the bolt 2 is the pin 7, whichtogether with the pin 5, carry the two parts of the change key tumblers.These tumblers each consist of a pivoted section 8 and a circularsection 8*. The front ends of the pivoted section 8 of each tumbler iscurved in the arc of a circle concentric with the pin 7, and toothed asat 7 a to mesh with the toothed edge 7 b of the circular section 8 sothat when the pivoted section 8 of the tumbler is moved by its spring orby a change key, the circular section will be partly rotated on its pin5. The several tumblers are alike, and each circular or disk shapedsectionis provided with a gating 8 which gatings when in alinementreceive the fence '9 projecting rearwardly from the head of "bolt 2, andpermit the bolt, if otherwise free,

to be retracted by the change key. Each pivoted member of the tumbler isspring pressed, so that when released by the key it will partly turn onits pin 7 and rotate its circular section so as to carry its gating 8out of line with the fence 9, thus lockingthe bolt in its projectedposition.

Located at the rear end of the bolt is the pin tumbler lock 10, the plug11 of which when turned by its proper key, (which is the guard key ofthe lock) actuates, through its cam 12, the bell crank dogging lever 13.This lever is pivotally mounted on the pin 14 fixed to the lock case,and is provided with a spring 15 which tends to normally hold the frontmember of said dogging lever 13 over and in contact with the cam 12, and

its rear member 13 in line with the rear end of the bolt 2, thus doggingthe latter, and absolutely preventing any movement of the bolt, untilsaid member 18 is moved out of the way of the bolt by the guard keyinserted in the pin tumbler lock 10.

Pivotally mounted on the pin: 7 at the rear of the bolt 2 is the catch,consisting of a central hub 16 and two arms 16 and 16, the former ofwhich normally rests under the rear arm 13 of the dogging of the catchin contact with the lug 13 on lever-13, and against the lug. 13 on v thedogging lever 13, while the latter is dogging the bolt 2, and when thedogging lever is moved out of the path of the bolt by the guard key andits lock, this arm rides under said lug 13 to the lower side thereof andengaging said lug, holds the arm l6 out of the path of n'lovement of thebolt. This movement of the catch, by its spring, carries the other arm16 thereof close up to the lower rear edge 2 of the bolt, so that whenthe bolt is ret acted by the change key, the catch will be turned on itspivot, so as to carry its arm l6 away from the lug 13 thus releasing thedogging lever 13 and permitting the latter to move into contact with theupper edge of the bolt, and free to again move into the path of the boltthe instant the latter is projected by the change key.

The change key lock consists of a nose 17 carrying a plug l7 having akey way there in for the passage of the change key having hitting of theusual form to engage the pivoted members 8 of the two part tumblers.This key also engages the bolt, and when the latter is freed of thedogging lever 13 retracts, and also projects the bolt.

From the construction thus far described it will be seen that to retractthe bolt, the guard key, held by the custodian of the boxes must befirst introduced and turned to move the dead-locking dog 13 out of thepath of the bolt, thus leaving the latter free to be retracted by thechange key, held by the lessee of the box. After the bolt has beenretracted, the act of projecting it again by the change key, causes thedead locking lever to again move into position to deadlock the boltagainst all keys.

It is desirable to provide means whereby, when a box is given up orsurrendered, its combination be changed so that it cannot be thereafteropened by its former change key, and to accomplish this, I make thetumblers in two parts as previously described, and provide a third keymechanism for separating the two parts of the tumblers, whereby they maybe reset on a new combination by the introduction of a new change key,while the bolt is thus retracted. This third key lock 18 is of the pintumbler type, and is accessible only through the rear face of the lock,hence can only be manipulated by a key retained in the custody of themanager, when the door is open, and which key is hereinafter referred toas the managers key. This lock 18 is as before stated, of the pintumbler type, and its plug is provided with a cam 18 resting in a recess(3 in the arms 6", projecting rearwardly from the slide plate 6 carryingthe pin 5 on which the circular or disk shaped section 8 of the tumblersare mounted. By inserting the managers key and turning the plug, the cam18, engaging one wall of the recess in the arm 6 moves the slide plate 6for wardly, thus carrying the pin with the circular or disk shapedsections 8 of the tumblers, away from the pivoted sections 8, thusreleasing the latter and permitting their springs to throw the tumblersdown and into contact with the plug 17 of the change key lock. As beforeexplained this can only be done when the door is open and the boltretracted, hence when the two parts of the tumblers are separated asabove described the circular or disk shaped sections 8 are lockedagainst movement by the fence 9 on the bolt- 2. By now inserting a newchange key, and turning same so as to partly rotate the pivoted section8 of the tumbler, and then while the pivoted sections of the tumblersare so held by the change key, releasing the slide plate 6 so that thecircular sections 8 of the tumblers will move back into engagement withthe pivoted sections 8, and a new combination will be formed, and thetumblers will. be operable only by the key to which the tumblers wereset, thus barring all previous change keys that may have been issuedagainst the lock.

It is evident that many slight changes might be resorted to in therelative arrangement of parts shown and described without departing fromthe spirit and scope of my invention. Hence I would have it understoodthat I do not wish to confine myself to the exact construction andarrangement of parts shown and described, but

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent, is:-

1. In a multiple key lock, the combination of a bolt, sectionaltumblers, a key for actuating the tumblers, a dead lock for the bolt, akey lock for moving said dead lock out of the path of the bolt, meansindependent of said key lock for holding the dead lock out of the pathof the bolt, after it has been actuated by its key lock, and a third keylock for separating the sections of the tumblers whereby a newcombination may be formed by the insertion of a new key.

2. In a multiple key lock, the coml'iination of a bolt, sectionaltumblers, a slide carrying a section of each tumbler, a key lock foractuating said slide whereby the tumbler sections may be separated, akey for actuating said tumblers, a dead locking device for the bolt, anda key lock for moving said dead locking device out of the path of thebolt.

3. In a multiple key lock, the combination of a bolt having a fence, aseries of two part tumblers, one part of each tumbler having a gating toreceive the fence on the bolt, a key lock for actuating the tumblers, akey lock for disconnecting the sections of the tumblers whereby thelatter may be set up on a new combination, a dead locking lever for thebolt, a key lock for moving said lever out of the path of the bolt andmeans for holdliong said dead lock out of the path of said 4:. In amultiple key lock, the combination of a bolt, sectional tumblers onesection of each tumbler being circular and mounted to rotate, and theother section of each tumbler being pivoted, dead locking means for thebolt, two key locks operable through the front face of the lock forrespectively moving the dead locking means out of the path of the bolt,and for actuating the tumblers and bolt, and a third key lock operablethrough the rear face of the lock for separating the sections of thetumblers, whereby the relative position of the two parts of the tumblersmay be changed.

In a multiple key lock, the combination of a lock casing, a supportcarried thereby, a bolt having a fence, a slide plate having a fixed pinthereon, sectional tumblers, one section of each being mounted on saidpin and the other section on the support carried by the lock casing,means for moving the sections carried by the plate away from and towardthe sections carried by the casing, a key lock for actuating thetumblers and the bolt, a dead locking lever for the bolt, and a key lockfor actuating said lever.

6. In a multiple key lock, the combination of a bolt, tumblers, a keylock for actuating the bolt and tumblers, a dead locking lever for thebolt, a key lock for actuating same to release the bolt, and a, catchpivoted in the lock casing and adapted to hold the dead locking leverout of the path of the bolt, and adapted when the bolt is retracted tobe engaged and moved by said bolt, to release the dead locking lever, sothat when the bolt is again projected the dead locking lever will moveinto its dead locking position' 7. In a multiple key lock, thecombination of a bolt,'tumblers, a key lock for actuating the tumblersand bolt, a dead locking lever for the bolt, a key lock for actuatingsame to release the bolt and a two armed spring actuated catch, one armadapted to engage the dead locking lever for holding same in theposition to which it is moved by its key lock, and the other arm adaptedto be engaged by the bolt when the latter is retracted for releasing thedead locking lever whereby the latter will be free to assume its deadlocking position as soon as the bolt has been fully projected.

8. In a multiple key lock, the combination of a bolt, sectionaltumblers, the two sections of each tumbler, independent supports forsaid sections, one of which supports is movable toward and from theother, whereby the sections of the tumblers may be brought intoengagement or separated, a key lock for actuating said movable support,a key for actuating the tumblers, a dead locking device for the bolt,and key lock mechanism, for moving said dead locking device out of thepath of the bolt. 7

9. In a multiple key lock, the combination of a bolt, sectionaltumblers, a slide carrying a section of each tumbler, a key lock foractuating said slide whereby the tumbler sections may be separated, akey for actuating said tumblers, a dead locking device for the bolt, akey lock for moving said dead look ing device out of the path of thebolt, and means independent of said key lock for holding the deadlocking device out of the path of the bolt .after it has been actuatedby its key lock.

In testimony whereof, I have signed this specification in the presenceof two subscrib ing witnesses.

WARREN. H. TAYLOR. W'itnesses:

J. A. GAYLo-R, lVM. M. NORDENI-IOLD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

